Ore-crusher.



No. 783,323. PATBNTBD FEB. 21, 1905.

F. P. snow ORE GRUSHER.

APPLICATION FILED SEPT. 19, 1903- 3 SHEETS-SHEET 1.

No. 783,323. v PATENTED FEB. 21, 1905. F. P. SNOW.

ORE GBUSHER.

APPLIOATIQN FILED SEPT. 19. 1903.

.3 SHEETS- SHEET 2.

Tfititurss gmmntnr PATENTED FEB. 21, 1905.

F. P. SNOW.

ORE GRUSHER.-

APPLIGATION IILBD SEPT. 19. 1903.

3 SHEETS-SHEET 3.

M min E a Z FRANK P. SNOW, OF LOS ANGELES, CALIFORNIA, ASSIGNOR TO FREDERICK Patented February 21, 1905.

W. BRAUN, OF LOS ANGELES, CALIFORNIA.

ORE-CRUSHER.

SPECIFICATION forming part of Letters Patent No. 783,323, dated February 21, 1905.

Application filed September 19, 1903. Serial No. 173,837.

To alt w/wm it 712/0151 concern:

Be it known that I, FRANK P. Snow, a citizen of the United States, residing at Los Angeles. in the county of Los Angeles and State of California. have invented certain new and useful Improvements in Ore-Crushers; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to certain new and useful improvements .in ore-Crushers, and more particularly to that class of crushers employed in laboratory-work.

My invention has for its object simplicity and economy of construction and extreme durability in use.

My invention has for a further object to give to the movable jaw of the crusher a circular or gyratory movement at its upper end, while at the same time imparting an oscillatory and vibrative movement to the lower end of said jaw, whereby great crushing power is exerted and the crushed material is discharged with great rapidity and facility.

My invention has for a further object to provide means whereby the crusher may not be strained or broken through excessive resistance by the material operated upon.

My invention has for a further object such construction and arrangement of parts that they may be readily assembled or substituted and the machine easily cleaned.

With these objects in view my invention consists in the details of construction and arrangement of the several parts, as will be hereinafter more fully explained.

In order that those skilled in the art to which my invention appertains may know how to make and use my improved ore-crusher and fully appreciate all of its advantages, I will proceed to describe the construction and operation of the same, referring by numerals to the accompanying drawings, in which Figure 1 is a perspective view of acrusher embodying the features of my invention.

Fig. 2 is a perspective view of the vibratory Flg.

jaw removed from its eccentricshaft.

3 is a rear end elevation of my improved crusher. Fig. 4 is a diagrammatic elevation of the stationary jaw, the vibratory jaw, and" the toggle-support at the lower end of the vibratory jaw, the dotted lines indicating the movement of the vibratory jaw and its togglesupport during the rotation of the eccentric driving-shaft. Fig. 5 is a central vertical section taken on the line an moi Fig. 3, the handle of the vibratory jaw being shown partly in elevation. Fig. 6 is a perspective view of the stationary jaw removed from the machine; and Fig. 7 is a horizontal section on the line g y of Fig. 5, the adjusting-screw being shown in place.

Similar reference numerals indicate like parts in the several figures of the drawings.

1 1 represent the sides of the machine, consisting of two plates of sheet-steel bent at right angles. as seen at 2 2, to constitute the base, which may be secured upon any suitable support through the medium of screw-bolts 3. The side plates 1 1 are secured in parallelism a suitable distance apart by means of screwbolts 4 and nuts 5. The bolts 4 may be shouldered to constitute a brace between the side plates and secured by the nuts 5, or the bolts may pass through tubular washers 6, as shown at the front lower portion of Fig. 1, the washers in such case subserving the same purpose as the shoulders on the bolts. To the inner surfaces of the side plates 1 1 are secured by screw-bolts 7 face-plates 8 8, which constitute the sides of the hopper.

9 is an eccentric drive or power shaft which is mounted in bearings 10, which extend through the side plates 1 1 and are secured thereto by bolts or rivets 11, and upon the ends of the drive-shaft may be keyed a handwheel 12 or a band-pulley 18, as may bedesired. Mounted upon the eccentric of the drive-shaft 9 is avibrating jaw 14, having a handle 15, with a central lubricant-channel 16, closed at the upper end by a suitable plug 17. The jaw 1a is formed with vertical strengthening-ribs 18 and with a lug 19, the latter adapted to connect one end of a tensionadapted to be seated in grooves or recesses in metal bearings 21*, which are riveted to the side plates 1 1, as clearly shown at Fig. 5. The strengthening-ribs 18 of the jaw 14 project rearward, as shown at Fig. 5, for the purpose presently explained. The tension-spring 20 is designed to hold the lower or free end of the jaw 14 in contact with the free end of a toggle 22, mounted upon the tubular washer 6 of the rear lower bolt 4, which is made of large diameter for the purpose hereinafter explained. The free end of the toggle 22 is rounded to take its bearing in a corresponding seat near the lower end of the jaw 14, as clearly shown at Figs. 4 and 5, so that as the power or drive shaft 9 is rotated the eccentric on said shaft will cause the jaw to move in the circular or gyratory direction, as indicated by the dotted lines in Fig. 4.

23 is a stationary adjustable jaw formed with strengthening-ribs 24 and fashioned at its upper end into hook form, as seen at 25, whereby said jaw may be suspended upon or removed from the upper forward side plates connecting bolt 4. The extreme upper end of the jaw 23 is provided with a loop or handle 26, (see Fig. 6,) by means of which the said jaw may be properly located or removed. The lower end of the jaw is formed with a channel 27, adapted to straddle an adjusting-bolt 28, which is passed diametrically through the rear side plates connecting bolt-4, as most clearly shown at Fig. 7. The forward end of the adjustingbolt 28 is threaded to receive anadjusting polygonal nut 29, which is provided with a threaded bushing 29 of Babbitt metal. The inner end of the nut 29 bears against the front surface of the jaw 23 around the channel 27, and the nut is supported by one of its faces upon the bolt 4 below the same, as best shown at Fig. 1. As will be obvious, when the nut 29 is turned onto the adjusting screw-bolt 28 the jaw 23 will be forced toward the vibratory jaw 14, and when the nut is turned in the opposite direction the jaw 23 will by gravity swing away from the jaw 14. An adjustable stop 30, secured to one of the side plates 1, as shown at Figs. 1 and 7, is designed to limit the movement of the jaw 23 toward the jaw 14. Both of the jaws 14 and 23 have their adjacent faces armed with face-plates 31, which are secured in position by screw-bolts 32. (See Fig. 5.) These plates constitute the working faces of the jaws, and as the wearing of said plates takes place at or below the center it will be seen that by loosening or removing the screw-bolts 32 the plates 31 may be turned end for end and also reversed to present opposite faces, thus providing four wearing-surfaces on each plate, and when unduly worn said plates may be removed and new ones substituted at comparative slight cost. The purpose of providing the adjusting-nut 29 with a threaded bushing of Babbitt metal is in order that if the jaws the pressure will cause the thread of the bushing to strip, and thus release the stationary jaw 23, which will then be free to vibrate away from the exerted pressure.

When it is desired to clean the crusher, the jaw 23 is lifted by its handle 26 out of the machine, the handle 15 of the jaw 14 is vibrated in the direction indicated by the arrow in Fig. 5 and against the tension of spring 20, which movement releases the toggle 22 from its seat in thelower end of the jaw, and the inner end of the toggle will then drop down by gravity below the lower end of the jaw 14, permitting the said jaw to be then vibrated in the reverse direction upon the shaft 9 to such an extent as to carry the lower end of said jaw to such a height as to leave the space between the side plates 1 1 entirely clear. As the jaw is vibrated, as just described. and travels upward in the arc of a circle, the projecting portions of the strengthening-ribs 18 will travel under the rod or bar 21, to which the tensionspring 20 is connected, and lift the same from its seats in the metal bearings 21 the tension of the spring holding the bar in position against the ribs 18, so that on the reverse movement of the jaw the bar will be again properly seated within the plates 21 The adjusting screw-bolt 28 and its nut 29 may be removed in an obvious manner after the toggle 22 has been allowed to vibrate upon its arbor sufficiently for the bolt 28 to be withdrawn.

The toggle 22 is formed with a heel or handle 33, by means of which the front end of the toggle may be elevated to take its seat within the lower end of the jaw 14 when the latter is vibrated by the handle 15 against the tension of the spring 20.

From the foregoing description it will be seen that my improved ore-crusher is simple and economic of construction; that easy access to all its parts is obtained for cleaning purposes, which is most essential in crushers used in laboratory-work; that the frame is easily constructed, very strong and durable, and avoids the usual difficulties found in frames constructed of cast-ironviz., to secure absolute uniformity of size of the crushing-chambers in a given number of machines without resorting to expensive machine-work. The parts being all readily interchangeable enables repairs when necessary to be made at small cost and expeditiously. The polygonal form of the nut on the adjusting screw-bolt 28 and resting upon the brace or bolt 4 prevents the nut from accidental movement upon the thread of said bolt, and the peculiar motion imparted to the vibratory jaw causes a very quick discharge of the crushed metal.

Many changes may be made in the mere details of construction-such, for instance, as the manner of connecting the two side plates are subjected to an undue strain which might I or frame of the machine or the manner of otherwise result in a breakage of the machine I forming the bearings for the power or drive shaftwithout departing from the spirit of my invention as hereinbefore fully explained.

\VhatI claim as new, and desire to secure by Letters Patent, is

1. In a rock-crusher having asuitable hopper or receptacle for the rock, a vertically-removable stationary jaw, adjustably secured at its lower end within the frame; a vibrative jaw mounted at its upper end upon an eccentric driving-shaft; an independent vibrative toggle pivoted in a plane below the free end of the vibrative jaw and having its outer end located within the lower end of said jaw; and a spring connected with the vibrative jaw and with the frame; whereby a circular or gyratory movement is imparted to the upper end of the vibrative jaw and the lower end of the same is caused to describe an arc of small amplitude, thus imparting an oscillatory and vibrative movement to the lower end as hereinbe fore set forth.

2. In a rock-crusher such as described, in combination with a vibrative jaw mounted upon an eccentric drivingshaft, a stationary jaw suspended by gravity upon a transverse shaft or support and bifurcated at its lower extremity and mounted there upon a transverse rod provided with an adj Listing-nut, substantially as and for the purpose set forth.

3. In a rock-crusher such as described, in combination withasuitable frame, a vibrative jaw mounted upon an eccentric-shaft and means for operating said shaft; a stationary jaw having a hook-shaped upper end loosely suspended upon a transverse support and vertically removable therefrom, and means for adjustably supporting the lower end against the pressure exerted by the vibrative jaw, substantially as hereinbefore set forth.

4. Ina crusher such as described, in combination With a stationary jaw, the movable jaw mounted upon an eccentric driving-shaft, and provided with strengthening-ribs, and an upwardly-extended operating handle; a tensionspring connected at one end to said jaw and at the opposite end to a bar supported at each end in open-slotted seats in the frame, and adapted to be lifted by the strengthening-ribs on the jaw when the latter is vibrated to its upward position, substantially as and for the purpose set forth.

5. In a crusher such as described, in combination with a movable jaw. a stationary jaw held in adjustable relation with the movable jaw by an adjusting-screw, and a nut having a threaded bushing of Babbitt metal, whereby any undue strain will cause the threaded bushing to be stripped, substantially as set forth.

In testimony whereof I affix my signature in presence of two witnesses.

- FRANK P. SNOW. Witnesses:

J. E. SMITH, R. M. WEED. 

